Appropriate punishment for the crime of spam?

I don't know about you but I'm bombarded with the stuff - via email, blog comments, forum postings and even website contact forms.

If I ever got my hands on the culprits in a quiet locked room, I'd... Actually, I don't know what I'd like to do most. Perhaps a few well-aimed kicks to sensitive places and then a couple of smacks around the head. But then what? Maybe force them to send personalised individual letters of apology to every person whose time they've wasted and whose day they spoiled. They can go free when they're done.

Punishment. Retribution. Or what?

Imagine you are in this situation, what would you do?

British Expat - helping people to live and work abroad since the year 2000.